Gas on when driving???

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Gas on when driving??? Empty Gas on when driving???

Post by Madmac on Sat Mar 30, 2019 7:48 pm

I have always turned off the gas at the bottle before driving the MH as this is the safest and hi recommended option.
The other day I was talking to a fellow AS owner who said not necessary to do this as there is a solenoid valve fitted in the line that closes when the engine starts.
Can any of you knowledgeable people confirm if this is correct please
Cheers 
Geoff

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Gas on when driving??? Empty Re: Gas on when driving???

Post by Paulmold on Sat Mar 30, 2019 8:12 pm

It's only correct if your van is fitted with Truma Crash Sensor regulator.

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Post by Molly3 on Sat Mar 30, 2019 8:34 pm

Is that a standard fit on factory fitted refillable  tanks
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Gas on when driving??? Empty Re: Gas on when driving???

Post by Paulmold on Sat Mar 30, 2019 8:49 pm

I have a refillable tank and don't have a crash regulator but then my van is a 2010 so it may depend on age.

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Gas on when driving??? Empty Re: Gas on when driving???

Post by inspiredron on Sat Mar 30, 2019 11:33 pm

Paul - as I understand it the crash sensor regulator turns off the gas if it receives a physical shock - ie it has a g-sensor. I did not think that it has any form of solenoid or electrical connection to switch off when the engine is running.
Youn r conclusion is correct, though - it IS safe to leave gas on with that kind of regulator. I believe that they also have a mechanism that shuts the gas off if the pipework, flexible or rigid, develops a significant leak.
My assertions may be incorrect as, like you, I just have a normal regulator which is not crash or leak safe.

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Gas on when driving??? Empty Re: Gas on when driving???

Post by PLOUGHLIN on Sat Mar 30, 2019 11:47 pm

The Truma one does cut off if a line breaks or shock impact over about 20kph.

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Gas on when driving??? Empty Re: Gas on when driving???

Post by crosgor on Sun Mar 31, 2019 10:13 am

PLOUGHLIN wrote:The Truma one does cut off if a line breaks or shock impact over about 20kph.

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 Reading this it suggests that ALL motorhomes constructed after 01/07 must be fitted a similar device.
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Gas on when driving??? Empty Re: Gas on when driving???

Post by Paulmold on Sun Mar 31, 2019 10:41 am

crosgor wrote:
PLOUGHLIN wrote:The Truma one does cut off if a line breaks or shock impact over about 20kph.

[You must be registered and logged in to see this link.]
 Reading this it suggests that ALL motorhomes constructed after 01/07 must be fitted a similar device.
Reading that link, you could well be right. I'll have to get underneath and see if I have the green reset button. I asked the question on handover and was told I didn't have that regulator but we all know how much the guys doing handovers know so it could be I have that regulator after all. So why do we switch all the internal gas taps off before driving?

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Gas on when driving??? Empty Re: Gas on when driving???

Post by Peter Brown on Sun Mar 31, 2019 10:50 am

crosgor wrote:
PLOUGHLIN wrote:The Truma one does cut off if a line breaks or shock impact over about 20kph.

[You must be registered and logged in to see this link.]
 Reading this it suggests that ALL motorhomes constructed after 01/07 must be fitted a similar device.

A safety shut-off device must be provided that prevents gas from inadvertently escaping if a line breaks in the event of an accident is ONLY a requirement for vehicles in which the converter specification permits the operation of a liquid gas heater while driving.
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Post by StewPotch on Sun Mar 31, 2019 6:45 pm

inspiredron wrote:..........I believe that they also have a mechanism that shuts the gas off if the pipework, flexible or rigid, develops a significant leak..........
Not in my case with a 2016 Fairford  rolleyes
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Gas on when driving??? Empty Re: Gas on when driving???

Post by Madmac on Mon Apr 01, 2019 1:32 am

Hi All
As we were away for an extended weekend when I raised this question I have just got home and did the following test
MH stopped and engine off
Turned gas bottle on and lit a cook top element
Started engine and waited for it to go out, probably left it going for 2-3 minutes
Then I turned off the gas at the bottle
Cooktop flame went out in under 10 seconds
Answers my question and I will not be driving with the gas on!!!!
Thank you for your responses
Cheers
Geoff

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Gas on when driving??? Empty Re: Gas on when driving???

Post by Bad Penny on Mon Apr 01, 2019 10:04 am

As devices sometimes fail and from a safety point of view, it is such a simple task with little effort to turn the gas off at source. Simply done, while doing last minute checks before driving off.

I can't see my wife frying bacon and eggs, while I'm driving over the Seven Bridge, so why leave it on.up!
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Gas on when driving??? Empty Re: Gas on when driving???

Post by crosgor on Mon Apr 01, 2019 3:00 pm

My new to me van, allows the use of the heating in the rear of the van whilst travelling, but has only has belts in the front, so pointless really.
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